56164

Appears in sequences

• Number of up/down (initially ascending) compositions of n.at n=26A025048
• Non-palindromic numbers such that the two largest proper divisors are palindromes having at least two digits and no other divisor is a palindrome with at least two digits.at n=36A074889
• a(0) = 0, a(1) = 1, a(n+1) = (2*n^2 + 2*n + 3)*a(n) - n^4*a(n-1), n >= 1.at n=5A142995
• G.f. satisfies: A(x) = 1 + x*A(x)^2/A(-x)^2.at n=10A143555
• Number of subsets A of {0,1,...,n-1} with |A+A| > |A-A|.at n=26A222807
• Number of nonisomorphic right involutory Płonka magmas with n elements.at n=9A361720